Contents may have variations from the printed book or be. Our key device is the arrayed waveguide grating router awgr, a passive device that can achieve contention resolution in the wavelength domain. Is called passive because unpowered optical splitters are used to enable a single optical fiber to serve multiple premises, typically 16128. A pon configuration reduces the amount of fiber and central office equipment required compared with pointtopoint architectures. Pdf passive optical networks pons are telecommunication networks that provide services to users by no active elements. Optical fiberbased networks can meet the increasing demand for faster and higher bandwidth broadband connections to user premises. A passive optical network consists of an optical line terminal olt at the service providers central office hub and a number of optical network units onus or optical network terminals onts, near end users. Passive optical network pon knowledge introduction. A passive optical network pon is a telecommunications network that uses. Much fewer olts are required as a single olt module can support hundreds of homes. We then outline in some depth the technologies used to implement this architecture, including the gpon and e. Capable of distributing voice, video and data to the desk top over one singlemode fiber, pons. Resources pdf corning lanscape passive optical solutions for lans pdf corning lanscape passive optical solutions for local area networks brochure. Passive optical networks pons have emerged as an alternative to struc tured cablingbased switched net works with applicationindependent telecommunications outlets in the work area.
A pon consists of an optical line terminal olt at the service providers central office and a number of optical network units onus near end users. Passive optical networks free download as powerpoint presentation. Ethernet passive optical networks definition ethernet passive optical networks epon are an emerging access network technology that provides a lowcost method of deploying optical access lines between a carriers central office co and a customer site. Wave division multiplexing, passive optical networking this brief specifically addresses apon applications and the associated synchronization requirements required for the smooth transmission of realtime services over broadband networks. In japan, ftth fiber to the home net works, in which optical fibers are installed directly to users homes, have. The unique reflection spectrum from fiber bragg grating fbg that is located in each optical network unit onu is manipulated in order to detect the fault network.
Finally, in the practical part, simulation software that meets the design requirements will be chosen, the design of passive optical network will be. A complete reference on all the standards and technologies of passive optical networks a technology key to bringing future broadband applications to the home. From the equipment room to the work area and everywhere in between, we offer plugandplay connectivity, high reliability and low cost of ownership. A physical layer enhanced secure future generation passive optical network pon based on chaotic signal scrambling and the secure hash algorithm sha is proposed and demonstrated. Its audience includes researchers, managers as well as network designers and operators. The architectural choice for ecofriendly, low cost, high. This technology allows sharing fiber optics among customers, reducing cost and maximizing the use of bandwidth. Epons build on the international telecommunications union itu standard g. A passive optical network pon is illustrated schematically in the figure below.
Passive optical networks asynchronous transfer mode. Osa a novel chaosbased encryption approach for future. We are continuously working with members of the testing services to build a cutting edge test bed of gpon olts, onts, fiber optic infrastructure, and test equipment. From there, around 32 fibers branch out to the subscribers. Passive optical networks pon passive fiber access architectures gpon optimize the ftth business model by leveraging the high subscriber density allowed by passive splits as high as 64 users per pon or olt port.
A passive optical network pon refers to a telecommunication technology that implements a pointtomultipoint architecture. Towards a new generation of passive optical networks. The 25 gbs, 50 gbs, and 100 gbs ethernet passive optical networks task force is working to adopt baselines. A feeder fiber from the central office co runs to a remote node rn, which houses a passive optical power splitterkombiner.
Pdf a survey of passive optical networks international. The pon uses passive optical splitters in lieu of ethernet copper cables. Passive optical components include simple optical connectors, splices, and fixed optical attenuators, but also more complicated, electronically controlled, optical devices like switches and variable optical attenuators. The passive optical lan is a pointtomultipoint network in which a single aggregation switch can provide more than 7,000 ip voice, data, and video network connections to any ethernetbased device or system. Fttx networks and pointtopoint and pointtomultipoint configurations, moving to elaborating at length on pon and conclude which of its technologies will be the most optimal ones nowadays. Optimized for testing passive optical networks fttxmode operation this mode lets you configure your fot930 maxtester to suit your fttx. Passive optical networks pon are presented as an alternative to. Standardization trends for nextgeneration passive optical.
However, instead of each singlemode strand serving 32 houses, it serves 32 optical network terminals, or onts, that sit in each work area. This article reports faults unique to an optical access system based on passive optical networks pons. Bibliographic record and links to related information available from the library of congress catalog. It should be noted, however, the same concepts apply to all passive optical network. Adaptive modulation techniques for passive optical networks. The fsan full service access network group and itut international telecommunication. A passive optical network pon is a system that transmits all or most of the fiber cabling and signals to endusers.
The main goal will be to provide timely dissemination of information and. A passive optical network pon is a fiberoptic telecommunications technology for delivering. Contents data are machine generated based on prepublication provided by the publisher. Each of the optical network terminals has 4 ports, serving either a single user or 2 users, assuming two ports per user. Star passive optical networks or pointtopoint active ethernet. Technologies and applications of passive optical networks. Case studies of faults and countermeasures in a passive optical network system. From the back cover passive optical network pon technologies have become an important broadband access technology as a result of the growing demand for bandwidthhungry videoon. A pon reduces the amount of fiber and central office equipment required compared with pointtopoint architectures. Case studies of faults and countermeasures in a passive optical.
Does everyone need 1 gbs continuously, all day, every day. Brought to you by the association for passive optical lan. These are active optical networks and passive optical networks. Enhanced security in passive optical networks using wdm pon. Passive optical components and their applications to ftth. These products enable highspeed voice, video and data communications for networking, storage, wireless, and cable tv applications. In our architectures, optical signals are transmitted from fast tunable.
A passive optical network pon is a cabling system that uses optical fibers and optical splitters to deliver services to multiple access points. So why are copper networks still so widely used although they have been. Passive optical networks pons and pointtopoint ethernet are architectures that deliver tripleplay services over ftth networks directly from an operators central office. Passive optical components are data format transparent, combining and dividing optical power in some predetermined ratio. Keywords passive optical networks, access networks, transport technology, virtual private networks, optical access technologies, transport concepts, ethernet, cable networks, wireless access, packet switched networks. The 3m passive optical lan solutions pols offers a complete endtoend fiber solution.
Optical fiber communication has brought us a new in ternet society. In that case, unpowered fiber optical splitters can make a single optical fiber serve multiple endpoints such as customers. The fot930 allows for automated, bidirectional loss and orl testing of passive optical networks pons at 10 nm, 1490 nm and 1550 nm, the three wavelengths recommended for pons by itut g. Publishers pdf, also known as version of record includes final page, issue. With hundreds of successful projects completed in and around occupied facilities, we have a laserlike. Each offers ways to separate data and route it to the proper place, and each has advantages and disadvantages as compared to the other source. Then there is no need to connect individual fibers between the hub and the customer. Experimental evaluation of tcp performance over 10gbs passive. A passive optical network is a form of fiberoptic access network. This is the only book currently on the market that addresses optical networks.455 763 1346 1543 634 306 993 509 123 1620 1223 1326 700 1002 22 267 235 1443 303 1633 112 161 1095 166 60 1254 1629 1178 1303 1285 1635 1424 1065 1530 340 178 1280 1411 250 426 7 858 1147 1368 1034 144 1326 1483